dt-bindings: spi: spi-mt65xx: add support for MT8516

Add binding documentation of spi-mt65xx for MT8516 SOC.

Signed-off-by: Leilk Liu <leilk.liu@mediatek.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed